Determination of a center feeling for eps sterring systems

a center feeling and eps sterring technology, applied in the direction of steering components, power driven steering, position/direction control, etc., can solve the problems of disturbing other parts of information, difficult to provide a behavior of target steering torque, and difficult to achieve the effect of improving the center point feeling, reliable and precis
US20120259513A1Inactive Publication Date: 2012-10-11ROBERT BOSCH AUTOMOTIVE STEERING
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
ROBERT BOSCH AUTOMOTIVE STEERING
Publication Date
2012-10-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

In order to transmit reliable and precise information, to as great an extent as possible, on current driving conditions and driving situations, and also achieve disturbance-free behavior of the steering system in the center point range, in a steering device in a vehicle, a target steering torque (torSSW) is determined by determining an actual toothed rack force (forRT), determining at least one first component for the target steering torque (torSSW) as a function of the actual toothed rack force (forRT), and determining at least one additional component for the target steering torque (torSSW) from a calculated toothed rack force (forRS), wherein the calculated toothed rack force (forRS) is determined from a wheel steering angle and a vehicle speed (velV).
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Description

BACKGROUND OF THE INVENTION

[0001] The invention relates to a method for determining a target steering torque for a steering means of a steering device in a vehicle.

[0002] The invention also relates to a steering device in a vehicle. The invention further relates to a computer program that can be executed on a control unit of a steering device in a vehicle, and to a memory medium on which the computer program is stored.

[0003] In modern steering devices, for example in an electric power steering (EPS) system or in what is referred to as a Steer-by-Wire (SbW) steering system, a target steering torque is determined, which is applied to a steering means, for example a steering wheel, in order to counteract or support the force applied by the driver. The target steering torque is frequently generated based on an actual toothed rack force acting on the wheels of the vehicle so as to provide the driver with the appropriate steering assistance. Additionally, further functions may be involved in...

Claims

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